我在/public_html/images/restricted中有几个图像使用.htaccess同时，我创建了一个获取图像的php文件。
使用POST更改特定ID 之前的示例
<?php>
$file = '/home/user/public_html/foodimage/ID-856-front.jpg';
header('Content-Type: image/jpeg');
print $file;
?>
我如何创建我的Webrequest来提取从这个php文件请求的图像。
Dim request As System.Net.WebRequest = System.Net.WebRequest.Create(url)
request.Proxy = Nothing
request.Method = "POST"
Dim postData = postvalues
Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)
request.ContentType = "application/x-www-form-urlencoded"
request.ContentLength = byteArray.Length
Dim dataStream As Stream = request.GetRequestStream()
dataStream.Write(byteArray, 0, byteArray.Length)
dataStream.Close()
Dim response As WebResponse = request.GetResponse()
dataStream = response.GetResponseStream()
Dim x As New BitmapImage
x.StreamSource() = dataStream
dataStream.Close()
response.Close()
Return (x)
请帮忙。我可以在类似的函数中提取json数组和字符串，但似乎无法检索图像。
我不是.NET方面的专家，所以我不能在这方面提供帮助，而是使用：
print $file;
尝试使用readfile（）(http://www.php.net/readfile)：
<?php>
$file = '/home/user/public_html/foodimage/ID-856-front.jpg';
header('Content-Type: image/jpeg');
readfile($file);
exit;
?>
好吧，在谷歌上搜索了几个小时后，我就可以让它工作了。这是我用来从php中检索图像的代码。
php代码
<?php>
$photoID = $_POST["uID"];
$file = "/home/username/public_html/imagefolder/ID-$photoID-front.jpg";
header('Content-Type: image/jpeg');
readfile($file);
exit;
?>
vb.net
Public Function getimage(ByVal url As String, ByVal postvalues As String) As BitmapImage
Dim request As System.Net.WebRequest = System.Net.WebRequest.Create(url)
request.Proxy = Nothing
request.Method = "POST"
Dim postData = postvalues
Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postData)
request.ContentType = "application/x-www-form-urlencoded"
request.ContentLength = byteArray.Length
Dim dataStream As Stream = request.GetRequestStream()
dataStream.Write(byteArray, 0, byteArray.Length)
dataStream.Close()
Dim x As New BitmapImage()
Dim lsResponse As [String] = String.Empty
Using lxResponse As HttpWebResponse = DirectCast(request.GetResponse(), HttpWebResponse)
Using reader As New BinaryReader(lxResponse.GetResponseStream())
Dim lnByte As [Byte]() = reader.ReadBytes(1 * 1024 * 1024 * 10)
Dim stream As New MemoryStream(lnByte)
stream.Seek(0, SeekOrigin.Begin)
x.BeginInit()
x.StreamSource = stream
x.EndInit()
End Using
End Using
Return x
End Function